/*
 * ==========================================================================================
 * =                   JAHIA'S DUAL LICENSING - IMPORTANT INFORMATION                       =
 * ==========================================================================================
 *
 *                                 http://www.jahia.com
 *
 *     Copyright (C) 2002-2020 Jahia Solutions Group SA. All rights reserved.
 *
 *     THIS FILE IS AVAILABLE UNDER TWO DIFFERENT LICENSES:
 *     1/GPL OR 2/JSEL
 *
 *     1/ GPL
 *     ==================================================================================
 *
 *     IF YOU DECIDE TO CHOOSE THE GPL LICENSE, YOU MUST COMPLY WITH THE FOLLOWING TERMS:
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 *
 *     2/ JSEL - Commercial and Supported Versions of the program
 *     ===================================================================================
 *
 *     IF YOU DECIDE TO CHOOSE THE JSEL LICENSE, YOU MUST COMPLY WITH THE FOLLOWING TERMS:
 *
 *     Alternatively, commercial and supported versions of the program - also known as
 *     Enterprise Distributions - must be used in accordance with the terms and conditions
 *     contained in a separate written agreement between you and Jahia Solutions Group SA.
 *
 *     If you are unsure which license is appropriate for your use,
 *     please contact the sales department at sales@jahia.com.
 */
package org.jahia.services.render.webflow;

import org.apache.commons.lang.StringUtils;
import org.jahia.bin.Action;
import org.jahia.bin.ActionResult;
import org.jahia.services.content.JCRNodeWrapper;
import org.jahia.services.content.JCRSessionWrapper;
import org.jahia.services.content.JCRTemplate;
import org.jahia.services.render.RenderContext;
import org.jahia.services.render.RenderService;
import org.jahia.services.render.Resource;
import org.jahia.services.render.URLResolver;
import org.jahia.services.render.filter.TemplateAttributesFilter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Enumeration;
import java.util.List;
import java.util.Locale;
import java.util.Map;

/**
 * Render action that executes the Webflow request processing.
 */
public class WebflowAction extends Action {

    private RenderService renderService;

    static final String WEBFLOW_LOCALE_PARAMETER = "webflowLocale";

    public void setRenderService(RenderService renderService) {
        this.renderService = renderService;
    }

    @Override
    public ActionResult doExecute(HttpServletRequest req, RenderContext renderContext, Resource resource, JCRSessionWrapper session, Map<String, List<String>> parameters, URLResolver urlResolver) throws Exception {
        String forcedLocale = null;
        if (parameters != null && parameters.containsKey(WEBFLOW_LOCALE_PARAMETER)) {
            forcedLocale = parameters.remove(WEBFLOW_LOCALE_PARAMETER).get(0);
        }
        Enumeration<?> parameterNames = req.getParameterNames();
        while (parameterNames.hasMoreElements()) {
            String parameterName = (String) parameterNames.nextElement();
            if (parameterName.startsWith("webflowexecution")) {
                String id = parameterName.substring("webflowexecution".length()).replace('_', '-');
                String view = "default";
                if (id.contains("--")) {
                    view = StringUtils.substringAfter(id, "--");
                    id = StringUtils.substringBefore(id, "--");
                }
                if (forcedLocale != null) {
                    req.setAttribute(TemplateAttributesFilter.FORCED_LOCALE_ATTRIBUTE, Locale.forLanguageTag(forcedLocale));
                }
                JCRNodeWrapper node = JCRTemplate.getInstance().getSessionFactory().getCurrentUserSession(renderContext.getWorkspace(), renderContext.getMainResourceLocale()).getNodeByUUID(id);
                req.setAttribute("actionParameters", parameters);
                renderService.render(new Resource(node, urlResolver.getResource().getTemplateType(), view, Resource.CONFIGURATION_MODULE), renderContext);
                return new ActionResult(HttpServletResponse.SC_OK, renderContext.getRedirect(), true, null);
            }
        }
        return ActionResult.OK;
    }
}
